Riddles certainly put your brain to work, especially as you age, so don't waste any time trying to solve the "I have cities, ...

Social media isn’t just for catching up on your friends’ lives, liking every single photo of your cousin’s new puppy or casually seeing what your ex is up to. It’s also a place where tricky brain ...

There's another viral math question confusing the internet. Do you have what it takes to figure it out?

The alphabet song won't help you in the case of this viral riddle Social media’s newest brain game has a ton of people stumped. So stumped, in fact, that the riddle has gone viral. People are ...

Get ready to solve these Christmas riddles before the detective does in this fun and festive brain teaser challenge. This ...

Math problems aren’t always easy to figure out. They require practice and experience to master, especially if you don’t have much time to spend learning. These seemingly simple numbers and equations ...

This past summer, the pharmaceutical giant launched InnoCentive.com, a Web site where scientists from Big Pharma and start-up biotechs post problems for outside researchers to solve. Companies signed ...